Flue-wall facing



Patented May 14, 1929.

STATES WILLIAM N. BLACKBRN, OF DREXEL HILL, PENNSYLVANIA.

anun-WALL FACING.

Application filed September 27, 1928. Serial No. 308,840.

the structure disclosed in my prior patent for flue wall acings, granted August 18, 1925, No. 1,550,143. i y

As :is well known to those familiar with the art,`llue walls leading from a fireplace are more or less rough and irregular, particularly as regards the sloping or inclined parts of the llue wall which lead to the chimney and this is true even when the walls are constructed of concrete or material other than brick. As a consequence, the passage lor smoke or products oi c mibustion is more or less retarded.` This roughness is accentuated in brick constructions, due to the' fact that very l'ew of the present day masons are competent to properly build the throat olf a lireplace, particularly as respects the sloping walls thereof. Accordingly, an important object ot the present invention is the provision oli a flue wall lacing or lining which covers all sloping 'laces of the flue wall and which has the advantage olf interlocking with the brick-work or other masonry, as set forth in the prior patent above mentioned. 1t is here pointed out that there are usually three sloping walls in the fireplace throat, two olf thai-ie walls being the side wall and. the third the front wall of the throat.`

A further objectof the invention is to produce a device including a plate for guiding the construction of the masonry olf and liningI each of these three walls, wherein the side plates include vertically directed lugs adapted to enter into inter-sticos between adjacent elements of the flue wall and have coaction with the third plate so that this plate is locked` and held in position with relation thereto.

rlhese and other objects I attain by the construction shown in the accompanying drawing, wherein lor the purpose of illustration is shown a preferred embodiment ot my invention and wherein Figure l is a front elevation of a chimney having a rflue wall lacing constructed in accordance with my invention; v

Figure 2 is a vertical sectional viewon line 2 2 of Figure l;

Figure 3 is a perspective view showing the lacing plates assembled;

Figure l is a perspective of one 'form oil. iront lacing plate;

Figure 5 is a perspective view o'lia modilied form of front l'acing plate;

the

Figure 6 is a perspective view of a further modilied form of plate.

In the drawings, 1 designates the chimney generally, 2 the fireplace and 3 the smoke line which leads upward from the back ol the lireplace and which communicates with the vertical and relatively small llue G of the chimney. The line 3 has vertical walls at its lower portion and upwardly and inwardly entendingl walls above these vertical walls which are directed toward the chimney throat. i

There are two of these sloping or inclined walls on each side of the chimney. i

In order to cover up the irregularilies which usually occur :in these walls, .l provide flue facing plates or linings 7 which are disposed upon the inner faces oit the inclined or sloping walls of the llue. These plates may be of cast iron, terra cotta or any other suitable material. Each facing plate is provided with a marginal. reinforcement or thickened portion 8, and projecting laterally lrom the opposite longitudinal edges thereof are the lower lugs 9 and the upper lugs 10. The lugs 9 are disposed somewhat above the eXtreme lower edge of the plate 'i'. '.lhesc lugs, as shown in liigure 3, are disposed in a normally vertical position, that is, when the plates are disposed within the throat of the chimney, these lugs are vertical and, Athere- `loro, are parallel to the vertical joints between the bricksof the chimney. Furthermore, the upper and under il'accs ol' these lugs provide shoulders which support the bricli work of the chimney. The upper lugs '1.0 ari` intended to be disposed practically on a level with the bottom oli the chin'mey throat.

From the upper margin olf the plate en tends the upwardly progecting lugs. Those lugs are also vertical and there are preferably a pair of these lugs, the material of the plate heilig thickened immediately below these lugs 1l and behind the rib or reinforce 8 so as to form shoulder portions 13 which have bolt apertures. 'lhrough these aper tures pass the transversely extending bells 15, each ofi? these bolts being screw-threaded at its opposite ends and carrying at each end apair olnuts 16, between which each plate 7 is adaptedto be engaged.

. Coacting with the lugs 1l and supporting the lining 17 oi the chimney is a base 1S which is formed of metal, terra cotta, or any other suitable material.

The iront wall ol the throat likewise in- 'the seat of the base 18 and vcloses the .joint of this base to render the same tight and fire-proof If desired, the plate 19 may be of slightly greater' width Vthan the distance between the edge walls of the chimney when completed, as in Figure 5, in which event, the lugs 9 and 10 at the forward edges of thev plates are preferably engaged through thev plates at slots Q3 formed in the lower edges thereof and openings 24 formed adjacent the upperrends thereof. In a 'further modification, theside edges of the plate 19 may be Aprovided with a flange 25' for fitting against the outer faces of the coacting plates 7 and more particularly against the ribs 8 thereof. These flanges will serve to seal the space between-the edges of the plates and prevent passage of dame through this space to contact the walls of the chimney. lVith either typeof plate, the securing element 2Q Y employed may be identical.

It will be obvious that by employing a construction of this character, the front plate may bereadily combined with a structure such as shown in my prior patent and may be secured thereto by elements which are Vreadily accessible at any building which is4 in the process of construction.

It will also be obvious that the construction illustrated is capable of a certain range of change and modification without materiallydeparting from the spirit of the invention and I accordingly do not limit myself to such specific structure except as hereinafter claimed.

`1..In a flue, ay pair of flue wall facing plates disposed in upwardly convergent relation and.v having at their front and rear edges vertically extending outwardly pro jecting lugs adapted to engage in interstices ofthe masonry from which the chimney is formed and a plate abutting thc forward vedges ofthe Afirst named plates apertured for the passage of said lugs'and adapted to seal the space between adjacent faces of the plates at the forward edge thereof. v

2. Ina flue, a pair of flue wall facing plates disposed in upwardly convergent relation and having at their front and rear edges vertically extending outwardly projecting lugs adapted to engage in interstiees of the masonry from which the chimney is formed, a plate abutting the forward edges -of the first named plates apertured for the tion and having at their front and rear edges vertically extending outwardly projecting lugs adapted to engage in interstices of the masonry from which the chimney is formed and a plate abutting the forward edges of the lirst named plates apertured for the passage of said lugs and adapted to seal the space between adjacent faces of the plates at the forward edge thereof, said lugsbeing apertured for the passage of se curing elements outwardly of the outer face of the last named plate.

4. In a tine, a pair of flue wall facing plates disposed in upwardly convergent relation and having at their front and rear edges vertically extending outwardly projecting lugs adapted to engage in intel-slices of the masonry from which the chinme)v is formed, a plate abutting the forward edges of the first named plates apertured for the passage of said lugs and adapted to seal the space between adjacent faces of the plates at the forward edge thereof, and a flue supporting base seated upon the upper edges of the first named plate, the lasty nanied plate projecting above the upper edges of the first named plates and above the joint hetween said flue support and the tirst named plate.

5. In a flue, a pair of tlue wall facing plates disposed in up ardly conwrgent relation and having at their front and rear edges vertically extending outwardly projecting' lugs adapted to engage in interstices of the masonry from which the ehin'iney is formed. a plate abutting the forward edges of the first named plates apertured for the passage of said lugs and adapted to seal the space between adjacent faces of the plates at the forward edge thereof, and means for securing the last named plate to the tirst named plate, said plate at its side edges havingr anges for engaging against the outer faces of the first named plate.

In testimony whereof I hereunto affix my signature.

VILLIA M N. BLACKBURN.

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